Um will it be std::chrono_literals::this_thread::sleep_for(1s) If I use it without the namespace statement ?

no, it would be std::this_thread::sleep_for(std::chrono_literals::s(1)); without it

NO 😐 std::this_thread::sleep_for(std::chrono::seconds(1));

yeah or that

Thankyou so much, it worked

no, it would be std::this_thread::sleep_for(std::chrono_literals::s(1)); without it

Don't do it, User-defined literals operators are meant to be in a global namespace.

Hi. Plz how can i get an integer from a file an assign it to a variable?

Plz

Hi. Plz how can i get an integer from a file an assign it to a variable?

C or C++?

In c

In c

fscanf

Plz just write the full command

Plz just write the full command

int fscanf(FILE *restrict stream, const char *restrict format, ...);

int fscanf(FILE *restrict stream, const char *restrict format, ...);

Not clear .plz

Plz just write the full command

FILE *f = fopen("file.txt", "r"); int num; fscanf(f, "%d", &num); fclose(f);

So can i assign it to a variable?

Likk a=fscanf()

?

Likk a=fscanf()

No cos fscanf would probably return the number of chars read instead of the chat itself

Just like scanf

No cos fscanf would probably return the number of chars read instead of the chat itself

Yep

Just like scanf

Plz give me the command.

So can i assign it to a variable?

Bruh do you know what pointers are?

So can i assign it to a variable?

That is what my code does. It assigns the number read to num

Bruh do you know what pointers are?

You pass an address of your variable to the scanf function

That is what my code does. It assigns the number read to num

Thanks bro. Let me give a try

🙏

Thanks bro. Let me give a try

And... Just asking, do you actually understand how that code works?

And... Just asking, do you actually understand how that code works?

Yes. I want to get an iteger from a file and assign the integer to a variable.

At a particular position in the file. Plz help me

🙏

Sorry, someone has an ebook stuck, queue ? 🙏

Plz write the command

Plz write the command

Plz write the command

See: man 3 fseek

Plz write the command

Before you want to write code, you must learn: http://www.it.uc3m.es/pbasanta/asng/course_notes/ctut.pdf We are not suppose to solve your homework.

Hi guys I'm a noob here, doing C, I wanted to ask after learning the basics, where do I go from there?

Hi guys I'm a noob here, doing C, I wanted to ask after learning the basics, where do I go from there?

Hi, if you have learned basics then you can practice your knowledge by making little projects, or you can upgrade your knowledge by reading books

Hi guys I'm a noob here, doing C, I wanted to ask after learning the basics, where do I go from there?

Read art and science of C

Is this correct code?

#include<stdio.h> #include<conio.h> char main() { printf("Hello"); getch(); return 0; }

#include<stdio.h> #include<conio.h> char main() { printf("Hello"); getch(); return 0; }

no

#include<stdio.h> #include<conio.h> char main() { printf("Hello"); getch(); return 0; }

Can you explain?

Is this correct code?

1- Do not include the conio.h header file, it's MS-DOS header file and non-portable. 2- The main() function signature is int main(), int main(int argc, char* argv[]) and int main(int argc, char* argv[], char* envp[]). ---------------- #include <stdio.h> int main() { printf("Hello\n"); }

#include<stdio.h> #include<conio.h> char main() { printf("Hello"); getch(); return 0; }

No

#include<stdio.h> #include<conio.h> char main() { printf("Hello"); getch(); return 0; }

But when I have run this code in system then I get output i.e hello... If this is incorrect it will have to genrate error msg why execution of program happened?

But when I have run this code in system then I get output i.e hello... If this is incorrect it will have to genrate error msg why execution of program happened?

Because of the compiler , ig

But when I have run this code in system then I get output i.e hello... If this is incorrect it will have to genrate error msg why execution of program happened?

The main() function should return int, type char could be converted to int and the compiler does that for you. https://en.cppreference.com/w/c/language/main_function

The main() function should return int, type char could be converted to int and the compiler does that for you. https://en.cppreference.com/w/c/language/main_function

why returning int? 🤔 really we need sizeof(int) states? or better question , do we have states more than 256? (edited: for returning to OS.)

why returning int? 🤔 really we need sizeof(int) states? or better question , do we have states more than 256? (edited: for returning to OS.)

Because C++ standard says so

why returning int? 🤔 really we need sizeof(int) states? or better question , do we have states more than 256? (edited: for returning to OS.)

You don't need it, others may be needed. BTW it's what standard says.

👍👍👍 Thanks

@adreup Read: §6.9.3.1 [basic.start.main] N4868

Because of the compiler , ig

Ig means?

@adreup Read: §6.9.3.1 [basic.start.main] N4868

Thanks, I readed something like this , but never know why int ... I will read this link too , thx again.

Thanks, I readed something like this , but never know why int ... I will read this link too , thx again.

👍

why returning int? 🤔 really we need sizeof(int) states? or better question , do we have states more than 256? (edited: for returning to OS.)

UNIX has been using status & 0xFF since the old days, but standardised C as int for portability.

The main() function should return int, type char could be converted to int and the compiler does that for you. https://en.cppreference.com/w/c/language/main_function

Can you explain how main function call by os and how memory allocated for declared variable of that programming

Otherwise the standard will be actually forcing other OS to be implemented as the same (few return status).

Can you explain how main function call by os and how memory allocated for declared variable of that programming

It's called by Standard Library, Kernel looks for __start function.

It's called by Standard Library, Kernel looks for __start function.

😖😣

UNIX has been using status & 0xFF since the old days, but standardised C as int for portability.

are you sure?!

I am begginer in c language please explain in basic term

Yesss

I am begginer in c language please explain in basic term

A wrapper calls your main. It could be provided by your compilers, C runtime library and/or other libraries in operating system.

I am begginer in c language please explain in basic term

At the begging of learning Programming With The C Language, you don't need to know how the main() function begins called. But ... See this talk: https://www.youtube.com/watch?v=dOfucXtyEsU

Maybe you can image there are bunch of functions before main.

Maybe you can image there are bunch of functions before main.

Automatically generated

Ig means?

ig = i guess

😂😂

Ok

The whole process of executing a program in Linux is extremely complicated and also interesting

For example, executing a program is almost always actually executing another super powerful program (called loader) to load the program into memory rather than directly executing the program.

Interpreter, the name of this mechanism.

Ok thnq

main() { printf("Hello"); getch(); }

Is this program run in c with extension .c

main() { printf("Hello"); getch(); }

Too K&R. Use "int main" instead.

Any other error Have you noticed?

Is this program run in c with extension .c

Are you doing a test somewhere?

No